Answer this question truthfully
### Question: What causes Acute aortic syndrome?
### Response: When it leaves the heart, the aorta first moves up through the chest toward the head (the ascending aorta). It then bends or arches, and finally moves down through the chest and abdomen (the descending aorta). Acute aortic syndrome most often happens because of a tear or damage to the inner wall of the aorta. This usually occurs in the chest (thoracic) part of the artery, but it may also occur in the abdominal part.
When a tear occurs, it creates two channels:
One in which blood continues to travel Another where blood stays still
If the channel with nontraveling blood gets bigger, it can push on other branches of the aorta. This can narrow the other branches and reduce blood flow through them. An Acute aortic syndrome may also cause abnormal widening or ballooning of the aorta (aneurysm).